Neonivek, I still don't get how megabeasts, sieges and tunnelers would get inside the fort to flood it. And why would they flood it? That's one of the reasons people didn't like the idea of tunneling at first; It would make the fort difficult to recover! It really seems like you are trying to perpetuate an argument just for the "fun" of it, because there's not really much logic applied there, and you're outright ignoring some of the arguments against tunneling.
Your really ignoring me, ironic isn't it?, when I say I don't think Tunnelers should expose Floods intentionally... If only because there is no way to recover after that leading long established fortresses (unless particularly rare) being ugly! If Toady implimented ways to take back lakes and rivers and essentially restore them entirely then Id have no problem with Flood diggers. That and the ability to swim.
-Magma isn't too much of a deal... Since Toady already confirmed that Magma sources will eventually be just as dangerous to tap as they are in real life. Eruptions are deadly! So people who make fortresses on Volcanos in the future basically will have to have fluid designs as well as back-ups incase of lava breaches.
--On a side note: Interestingly in real life, flooding whole cities by causing rivers, dams, and sewers to back up is an effective strategy that has been done before.
Though realistically the Tunneler probably wouldn't want to flood you so they would hardly EVER do so. As Tunnelers essentially wish to live and adding in algorithms that allows them to know how not only to flood your base but to do so safely is a lot more work. Which basically means the only tunnelers would be those who are Fire or Water immune... Meaning tunneling Megabeasts and Powers who are essentially rare.
As for Sieges and Megabeasts... they break down walls, floodgates, doors, and natural walls either intentionally or unintentionally that can lead to floods. Which I stated. They would do this to get to your dwarves/resources and cause damage to your fortress. They can also burn down wooden fortresses.
I love how he is hinting that me a troll
because as you know "Everyone who disagrees with you for more then one post is only doing so because they want to annoy you"... Cut that out!!! We arn't going down that road and we arn't going to sink this topic under a flood of trolling. I don't want to see any more posts on the subject of trolling or who you believe is trolling.